.span_tips{
  width: 1200px;
  height: 50px;
  margin: 0 auto;
  font-size: 14px;
  color: #999;
}
.span_tips span.why{
  display: inline-block;
  width: 18px;
  height: 18px;
  border-radius: 9px;
  margin-right: 10px;
  background-color: #afafaf;
  color: #fff;
  text-align: center;
  
}
.span_tips span.ikonw{
  margin-left: 10px;
  color: #00B38A;
  cursor: pointer;
}